WHITE-RODGERS 1F51N-619 Low Voltage Evaporative Cooler Thermostat Instruction Manual
- June 17, 2024
- WHITE RODGERS
Table of Contents
**WHITE-RODGERS 1F51N-619 Low Voltage Evaporative Cooler Thermostat Instruction Manual
**
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
This low voltage thermostat is designed to operate with the White-Rodgers 8A18Z-2 Evaporative Cooler Control. For versatility, the thermostat subbase has a System Switch that lets you select VENT, COOL or OFF positions. The Fan Switch offers the selection of LOW or HIGH fan speed.
PRECAUTIONS
If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor, electrician, or someone familiar with basic electricity and wiring. Do not exceed the specification ratings. All wiring must conform to local and national electrical codes and ordinances. This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.
CAUTION
To prevent electrical shock and/or equipment damage, disconnect electric power
to system, at main
fuse or circuit breaker box, until installation is complete.
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will burn out heat anticipator and could cause personal injury and/or property damage.
WARNING
Do not use on circuits exceeding 30 volts. Higher voltage will damage control and could cause shock or fire hazard.
SPECIFICATIONS
| ELECTRICAL DATA | THERMAL DATA |
|---|---|
| Switch Rating: 24VAC (30VAC max.) Cooling – 0 to 1.5 Amps | Temperature Scale |
Range: 1 to 5 (Cooler to Warmer)
Switch Action: SPST – Snap Action switch| Differential: 1°F
ATTENTION!
This product does not contain mercury. However, this product may replace a
unit which contains mercury. Do not open mercury cells. If acell becomes
damaged, do not touch any spilled mercury. Wearing no-absorbent gloves, take
up the spilled mercury with sand or other absorbent material and place into a
container which can be sealed. If a cell becomes damaged, the unit should be
discarded. Mercury must not be discarded in household trash. When the unit
this product is replacing is to be discarded, place in a suitable container
and refer to www.white-rodgers.com for
location to send the product containing mercury.
White-Rodgers is a division of Emerson Electric Co. www.white- rodgers.com
INSTALLATION
ATTACH SUBBASE TO WALL
- Route wires from the cooling equipment to the thermostat location and pull wires through hole in wall so that 6 inches of cable protrudes.
- Pull wires through opening near center of subbase and connect wires beneath terminal screws as shown under wiring.
- Push excess wiring into wall and plug hole with fire-resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.
- Fasten subbase loosely to wall, as shown, using two mounting screws. Place a level against bottom of subbase, adjust until level, and then tighten mounting screws to secure subbase
ATTACH THERMOSTAT TO SUBBASE
- Remove cover from thermostat base by gripping the base in one hand. Use the other hand to pull gently at the top or bottom of the cover.
- Carefully remove the shipping protective packing from the switch.
- Attach thermostat base to subbase, being sure that all captive screws are tightened snugly, since they serve as electrical connections between thermostat and subbase.
- Snap cover on thermostat base and set temperature lever to desired setting. The thermostat scale has numbers from 1 to
- The lower numbers represent cooler temperature and the higher numbers represent warmer temperature.
WIRING
Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat. Personal injury and/or property damage may occur.
All wiring should be installed according to local and national electrical codes and ordinances.
Refer to instruction sheet for 8A18Z-2, Evaporative Cooler Control for typical system hookup
OPERATION
The chart below illustrates system and thermostat function during various modes of operation.
| SUBBASE SWITCH POSITIONS | SYSTEM FUNCTION | COMPONENT OPERATION |
|---|---|---|
| FAN | SYSTEM | **FAN |
| TIMER RELAY** | **FAN | |
| RELA SPEEDY** | **PUMP |
RELAY
HI| LO| OFF| COOL| VENT
| **| | | | | | | NO FAN – NO PUMP – NO COOL
| | | | | | | | COOLING MODE – Pump relay and Fan timer
relay energized by thermostat. Water begins circulating on cooler pads, fan
will start on low speed after short time delay?
| | | | | | | | COOLING MODE – Pump relay and Fan
timer relay energized by thermostat. Fan speed relay is energized by fan
switch in “HI” position. Water begins circulating on cooler pads, fan will
start on high speed after short time delay.*
| | | | | | | | VENT MODE – Fan timer relay energized by
thermostat. Fan speed relay is energized by fan switch in “HI” position. Fan
will start on high speed after short time delay.*
| | | | | ***| | | VENT MODE – Fan timer relay energized by
thermostat. Fan will start on low speed after short time delay.
In “HI” position – No fan, but fan speed relay will remain energized
**** Indicates switch position on thermostat subbase and system function in
operationFan timer relay energizes in approximately one minute. When system
shuts off, relay de-energizes in approximately 1/2 minute
The Emerson logo is a trademark and a service mark of Emerson Electric Co.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>